Wendy, Anna and Hilda had a total of 169 stamps. Wendy gave
13 of her stamps away. Hilda gave away 2 times as many stamps as Wendy and Anna gave away 24 stamps. In the end, they had 100 stamps left. How many stamps did Anna and Hilda have in total in the end?
| |
Wendy |
Anna |
Hilda |
Total |
| Before |
3 u |
? |
? |
169 |
| Change |
- 1 u |
- 24 |
- 2 u |
- 69 |
| After |
2 u |
? |
100 |
Number of stamps that Hilda gave away
= 2 x 1 u
= 2 u
Number of stamps given away
= 1 u + 24 + 2 u
= 3 u + 24
3 u + 24 = 169 - 100
3 u = 69 - 24
3 u = 45
1 u = 45 ÷ 3 = 15
Number of stamps that Anna and Hilda had in the end
= 100 - 2 u
= 100 - 2 x 15
= 100 - 30
= 70
Answer(s): 70
